598 feed plugin image support

[negrel]

Description

Add image support to feed plugin.

Related Issues

Addresses #598.

Check List

• Have you read the
  CODE OF CONDUCT
• Have you read the document
  CONTRIBUTING
  • One pull request per feature. If you want to do more than one thing,
    send multiple pull request.
  • Write tests.
  • Run deno fmt to fix the code format before commit.
  • Document any change in the CHANGELOG.md.

[oscarotero]

Thanks. The tests are failing due the new image file in the assets folder. Can you run deno task test tests/feed.test.ts -- --update to update it?

[negrel]

Thanks. The tests are failing due the new image file in the assets folder. Can you run deno task test tests/feed.test.ts -- --update to update it?

It seems that my change to test site also impacted snapshot of other tests. I've updated snapshot of those test in a separate commit. I can't run test suite locally, favicon test seems to never end so some failing test may remain. Let me know if that's the case.

[oscarotero]

The favicon issue is a bug from Deno in its support for NPM packages (denoland/deno#21686)

I'm using Deno 1.38.5 to run the tests because it's the most recent version without this bug. You can run deno upgrade --version 1.38.5 to update the tests. Then back to the latest Deno version with deno upgrade.

[negrel]

Should be ok now.

[oscarotero]

Thank you!